V-Lab
Zhejiang E-P Equipment Co GAS-GARCH Student T Volatility Analysis
Volatility prediction for Tuesday, August 25th, 2026
1 Day
28.51%
decreased by 0.23%
1 Week
33.39%
increased by 4.65%
1 Month
38.67%
increased by 9.93%
Analysis last updated: Tuesday, August 25, 2026 at 06:05 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 24, 2024 to Aug 21, 2026Model Insight
Volatility shocks decay with a half-life of 3 trading days, meaning a shock loses half its impact after approximately 3 days. Returns follow a Student-t distribution with v = 3.73 degrees of freedom, capturing fatter tails than a normal distribution.
𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 6.7069 | 4.67*** |
α ARCH Response to squared shocks | 0.2184 | 6.08*** |
β GARCH Volatility persistence | 0.7873 | 19.28*** |
ν DF Student-t tail thickness | 3.7347 | 3.55*** |
Persistence:
0.787
Half-life:
3 days
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